Features. 3mm thick aluminum base. Ultra-durable. 50 % harder & 40% more resistant to abrasion. Internally reinforced nonstick coating. Ergonomic cast stainless steel handle. Tempered glass lid with steam release vent. Ovenproof even on broil up to 450°F. Easy to clean & dishwasher safeSpecifications. Color: Black. Material: Aluminum. Shape: Square